diff --git a/MyConfig.h b/MyConfig.h
index 856abb5..e1dbdb3 100644
--- a/MyConfig.h
+++ b/MyConfig.h
@@ -158,7 +158,7 @@
  * @def MY_SERIAL_OUTPUT_SIZE
  * @brief Maximum characters for serial output.
  *
- * If you are running extreamely low on memory, reducing this size might just save your day.
+ * If you are running extremely low on memory, reducing this size might just save your day.
  */
 #ifndef MY_SERIAL_OUTPUT_SIZE
 #define MY_SERIAL_OUTPUT_SIZE (120u)
@@ -394,7 +394,7 @@
 
 /**
  * @def MY_RF24_DATARATE
- * @brief RF24 datarate.
+ * @brief RF24 data rate.
  *
  * - RF24_250KBPS for 250kbs
  * - RF24_1MBPS for 1Mbps
@@ -633,7 +633,7 @@
 
 /**
  * @def MY_RFM69_TX_POWER_DBM
- * @brief Set TX power level, default 5dBm (overriden if ATC mode enabled).
+ * @brief Set TX power level, default 5dBm (overridden if ATC mode enabled).
  */
 #ifndef MY_RFM69_TX_POWER_DBM
 #define MY_RFM69_TX_POWER_DBM (5)
@@ -895,7 +895,7 @@
 
 /**
  * @def MY_RFM95_TX_POWER_DBM
- * @brief Set TX power level, default 13dBm (overriden if ATC mode enabled)
+ * @brief Set TX power level, default 13dBm (overridden if ATC mode enabled)
  *
  * See here https://en.wikipedia.org/wiki/Short_Range_Devices
  */
@@ -1506,7 +1506,7 @@
  * with the regular software and ATSHA204A based modes.
  *
  * If the provided password is shorter than the size of the HMAC or %AES key, it will be null-padded
- * to accomodate the key size in question. A 32 character password is the maximum length. Any
+ * to accommodate the key size in question. A 32 character password is the maximum length. Any
  * password longer than that will be truncated.
  */
 //#define MY_SIGNING_SIMPLE_PASSWD "MyInsecurePassword"
@@ -1546,7 +1546,7 @@
  *        requirements.
  *
  * Use this for evaluating security. It allows for gradual introduction of signing requirements in
- * a network. Nodes that present themselves as not requiering signing or whitelisting will be
+ * a network. Nodes that present themselves as not requiring signing or whitelisting will be
  * cleared of this requirement at the receiving end. A gateway which require signatures will only do
  * so from nodes that in turn require signatures.
  *
@@ -1626,7 +1626,7 @@
 /** @}*/ // End of SigningSettingGrpPub group
 
 /**
- * @defgroup MyLockgrppub Node locknig
+ * @defgroup MyLockgrppub Node locking
  * @ingroup MyConfig
  * @brief These options control node lock related configurations.
  *
@@ -1639,7 +1639,7 @@
  * message to the gateway/controller with 30 minute intervals. Payload is a string with a reason for
  * the locking.
  *
- * The string is abbreviated to accomodate a signature. The following abbreviations exist at the
+ * The string is abbreviated to accommodate a signature. The following abbreviations exist at the
  * moment:
  * - LDB (Locked During Boot)
  * - TMNR (Too Many Nonce Requests)
@@ -1668,7 +1668,7 @@
 
 /**
  * @def MY_NODE_UNLOCK_PIN
- * @brief By grounding this pin durig reset of a locked node, the node will unlock.
+ * @brief By grounding this pin during reset of a locked node, the node will unlock.
  *
  * If using a secure bootloader, grounding the pin is the only option to reactivate the node.
  * If using stock Android bootloader or a DualOptiBoot it is also possible to download a sketch
@@ -1680,9 +1680,9 @@
 
 /**
  * @def MY_NODE_LOCK_COUNTER_MAX
- * @brief Maximum accepted occurances of suspected malicious activity in a node.
+ * @brief Maximum accepted occurrences of suspected malicious activity in a node.
  *
- * Counter decrements on reoccuring incidents but resets if legitimate behaviour is identified.
+ * Counter decrements on reoccurring incidents but resets if legitimate behaviour is identified.
  */
 #ifndef MY_NODE_LOCK_COUNTER_MAX
 #define MY_NODE_LOCK_COUNTER_MAX (5)
@@ -1782,7 +1782,7 @@
 #define MY_NODE_TYPE "REPEATER"
 #elif defined(DOXYGEN)
 #define MY_IS_GATEWAY //!< true when configuration indicate a gateway device, @todo Mark these internals
-#define MY_NODE_TYPE  //!< "GW" for wateways, REPEATER" for repeaters, "NODE" for nodes, @todo Mark these internals
+#define MY_NODE_TYPE  //!< "GW" for gateways, REPEATER" for repeaters, "NODE" for nodes, @todo Mark these internals
 #else
 #define MY_IS_GATEWAY (false)
 #define MY_NODE_TYPE "NODE"
diff --git a/core/MyEepromAddresses.h b/core/MyEepromAddresses.h
index c067276..7bb39d6 100644
--- a/core/MyEepromAddresses.h
+++ b/core/MyEepromAddresses.h
@@ -82,7 +82,7 @@
 #define EEPROM_SIGNING_SOFT_SERIAL_ADDRESS (EEPROM_SIGNING_SOFT_HMAC_KEY_ADDRESS + SIZE_SIGNING_SOFT_HMAC_KEY)
 /** @brief Address RF AES encryption key. This is set with @ref SecurityPersonalizer.ino */
 #define EEPROM_RF_ENCRYPTION_AES_KEY_ADDRESS (EEPROM_SIGNING_SOFT_SERIAL_ADDRESS + SIZE_SIGNING_SOFT_SERIAL)
-/** @brief Address node lock couner. This is set with @ref SecurityPersonalizer.ino */
+/** @brief Address node lock counter. This is set with @ref SecurityPersonalizer.ino */
 #define EEPROM_NODE_LOCK_COUNTER (EEPROM_RF_ENCRYPTION_AES_KEY_ADDRESS + SIZE_RF_ENCRYPTION_AES_KEY)
 /** @brief First free address for sketch static configuration */
 #define EEPROM_LOCAL_CONFIG_ADDRESS (EEPROM_NODE_LOCK_COUNTER + SIZE_NODE_LOCK_COUNTER)
diff --git a/core/MyGatewayTransportEthernet.cpp b/core/MyGatewayTransportEthernet.cpp
index 3f04e34..9ec4512 100644
--- a/core/MyGatewayTransportEthernet.cpp
+++ b/core/MyGatewayTransportEthernet.cpp
@@ -450,7 +450,7 @@ void gatewayTransportRenewIP(void)
 	 0 - nothing happened
 	 1 - renew failed
 	 2 - renew success
-	 3 - rebinf failed
+	 3 - rebind failed
 	 4 - rebind success
 	 */
 	static unsigned long next_time = hwMillis() + MY_IP_RENEWAL_INTERVAL_MS;
@@ -462,7 +462,7 @@ void gatewayTransportRenewIP(void)
 	}
 	if (Ethernet.maintain() & ~(0x06)) {
 		GATEWAY_DEBUG(PSTR("!GWT:TRC:IP RENEW FAIL\n"));
-		/* Error occured -> IP was not renewed */
+		/* Error occurred -> IP was not renewed */
 		return;
 	}
 	_w5100_spi_en(false);
diff --git a/core/MyIndication.h b/core/MyIndication.h
index 9d613d3..7c446b0 100644
--- a/core/MyIndication.h
+++ b/core/MyIndication.h
@@ -34,9 +34,9 @@ typedef enum {
 	INDICATION_GOT_PARENT,                    //!< Found parent node.
 	INDICATION_REQ_NODEID,                    //!< Request node ID.
 	INDICATION_GOT_NODEID,                    //!< Got a node ID.
-	INDICATION_CHECK_UPLINK,				  //!< Check uplink
+	INDICATION_CHECK_UPLINK,                  //!< Check uplink
 	INDICATION_REQ_REGISTRATION,              //!< Request node registration.
-	INDICATION_GOT_REGISTRATION,              //!< Got registration reponse.
+	INDICATION_GOT_REGISTRATION,              //!< Got registration response.
 	INDICATION_REBOOT,                        //!< Rebooting node.
 	INDICATION_PRESENT,                       //!< Presenting node to gateway.
 	INDICATION_CLEAR_ROUTING,                 //!< Clear routing table requested.
@@ -47,15 +47,15 @@ typedef enum {
 	INDICATION_FW_UPDATE_RX_ERR,              //!< Received wrong piece of firmware data.
 
 	INDICATION_ERR_START = 100,
-	INDICATION_ERR_HW_INIT,					  //!< HW initialization error
+	INDICATION_ERR_HW_INIT,                   //!< HW initialization error
 	INDICATION_ERR_TX,                        //!< Failed to transmit message.
-	INDICATION_ERR_TRANSPORT_FAILURE,		  //!< Transport failure.
+	INDICATION_ERR_TRANSPORT_FAILURE,         //!< Transport failure.
 	INDICATION_ERR_INIT_TRANSPORT,            //!< MySensors transport hardware (radio) init failure.
 	INDICATION_ERR_FIND_PARENT,               //!< Failed to find parent node.
 	INDICATION_ERR_GET_NODEID,                //!< Failed to receive node ID.
 	INDICATION_ERR_CHECK_UPLINK,              //!< Failed to check uplink
 	INDICATION_ERR_SIGN,                      //!< Error signing.
-	INDICATION_ERR_LENGTH,					  //!< Invalid message length.
+	INDICATION_ERR_LENGTH,                    //!< Invalid message length.
 	INDICATION_ERR_VERSION,                   //!< Protocol version mismatch.
 	INDICATION_ERR_NET_FULL,                  //!< Network full. All node ID's are taken.
 	INDICATION_ERR_INIT_GWTRANSPORT,          //!< Gateway transport hardware init failure.
diff --git a/core/MyLeds.cpp b/core/MyLeds.cpp
index 94e6d42..322fce3 100644
--- a/core/MyLeds.cpp
+++ b/core/MyLeds.cpp
@@ -46,7 +46,7 @@ inline void ledsInit()
 	hwPinMode(MY_DEFAULT_ERR_LED_PIN, OUTPUT);
 #endif
 	prevTime = hwMillis() -
-	           LED_PROCESS_INTERVAL_MS;     // Substract some, to make sure leds gets updated on first run.
+	           LED_PROCESS_INTERVAL_MS;     // Subtract some, to make sure leds gets updated on first run.
 	ledsProcess();
 }
 
diff --git a/core/MyMessage.h b/core/MyMessage.h
index 6289fe1..91c08cb 100644
--- a/core/MyMessage.h
+++ b/core/MyMessage.h
@@ -238,7 +238,7 @@ typedef enum {
 #define mGetVersion(_message) ((uint8_t)BF_GET(_message.version_length, 0, 2)) //!< Get version field
 
 #define mSetSigned(_message,_signed) BF_SET(_message.version_length, _signed, 2, 1) //!< Set signed field
-#define mGetSigned(_message) ((bool)BF_GET(_message.version_length, 2, 1)) //!< Get versignedsion field
+#define mGetSigned(_message) ((bool)BF_GET(_message.version_length, 2, 1)) //!< Get signed field
 
 #define mSetLength(_message,_length) BF_SET(_message.version_length, _length, 3, 5) //!< Set length field
 #define mGetLength(_message) ((uint8_t)BF_GET(_message.version_length, 3, 5)) //!< Get length field
@@ -352,7 +352,7 @@ typedef union {
 	// 5 bit - Length of payload
 	uint8_t command_ack_payload; // 3 bit - Command type
 	// 1 bit - Request an ack - Indicator that receiver should send an ack back.
-	// 1 bit - Is ack messsage - Indicator that this is the actual ack message.
+	// 1 bit - Is ack message - Indicator that this is the actual ack message.
 	// 3 bit - Payload data type
 	uint8_t type;            	 // 8 bit - Type varies depending on command
 	uint8_t sensor;          	 // 8 bit - Id of sensor that this message concerns.
diff --git a/core/MyOTALogging.h b/core/MyOTALogging.h
index 5bc9dd1..d2d1035 100644
--- a/core/MyOTALogging.h
+++ b/core/MyOTALogging.h
@@ -46,7 +46,7 @@
  * You will see the hwMillis() of the receiving node. After each \n character, a
  * new debug message line starts. Incomplete messages are ending with '...'
  *
- * @param logNode    Testination node ID
+ * @param logNode    Destination node ID
  * @param enableAck  Enable or disable ACK flag
  * @param fmt        printf format string
  * @param ...        arguments
diff --git a/core/MyProtocol.h b/core/MyProtocol.h
index 389628d..e453260 100644
--- a/core/MyProtocol.h
+++ b/core/MyProtocol.h
@@ -28,7 +28,7 @@
 // returns true if successfully parsed the input string
 bool protocolParse(MyMessage &message, char *inputString);
 
-// Format MyMessage to the protocol represenataion
+// Format MyMessage to the protocol representation
 char *protocolFormat(MyMessage &message);
 
 #endif
diff --git a/core/MyProtocolMySensors.cpp b/core/MyProtocolMySensors.cpp
index 1f43907..def4b97 100755
--- a/core/MyProtocolMySensors.cpp
+++ b/core/MyProtocolMySensors.cpp
@@ -41,10 +41,10 @@ bool protocolParse(MyMessage &message, char *inputString)
 	        str = strtok_r(NULL, ";", &p) // get subsequent tokens
 	    ) {
 		switch (i) {
-		case 0: // Radioid (destination)
+		case 0: // Radio id (destination)
 			message.destination = atoi(str);
 			break;
-		case 1: // Childid
+		case 1: // Child id
 			message.sensor = atoi(str);
 			break;
 		case 2: // Message type
diff --git a/core/MySensorsCore.cpp b/core/MySensorsCore.cpp
index 76c36c1..c971579 100644
--- a/core/MySensorsCore.cpp
+++ b/core/MySensorsCore.cpp
@@ -465,7 +465,7 @@ bool _processInternalMessages(void)
 		// sender is a node
 		if (type == I_REGISTRATION_REQUEST) {
 #if defined(MY_GATEWAY_FEATURE)
-			// registeration requests are exclusively handled by GW/Controller
+			// registration requests are exclusively handled by GW/Controller
 #if !defined(MY_REGISTRATION_CONTROLLER)
 			bool approveRegistration;
 
@@ -730,7 +730,7 @@ void _checkNodeLock(void)
 			_nodeLock("LDB"); //Locked during boot
 		}
 	} else if (hwReadConfig(EEPROM_NODE_LOCK_COUNTER) == 0xFF) {
-		// Reset walue
+		// Reset value
 		hwWriteConfig(EEPROM_NODE_LOCK_COUNTER, MY_NODE_LOCK_COUNTER_MAX);
 	}
 #endif
diff --git a/core/MySensorsCore.h b/core/MySensorsCore.h
index 70e1913..721cbde 100644
--- a/core/MySensorsCore.h
+++ b/core/MySensorsCore.h
@@ -178,7 +178,7 @@ bool sendHeartbeat(const bool ack = false);
 
 /**
 * Send this nodes signal strength to gateway.
-* @param level Signal strength can be rssi if the radio provide it, or another kind of calculation
+* @param level Signal strength can be RSSI if the radio provide it, or another kind of calculation
 * @param ack Set this to true if you want destination node to send ack back to this node. Default is not to request any ack.
 * @return true Returns true if message reached the first stop on its way to destination.
 */
@@ -414,7 +414,7 @@ void receive(const MyMessage &message)  __attribute__((weak));
 */
 void receiveTime(uint32_t)  __attribute__((weak));
 /**
-* @brief Node presenation
+* @brief Node presentation
 */
 void presentation(void)  __attribute__((weak));
 /**
diff --git a/core/MySigning.cpp b/core/MySigning.cpp
index 731ac44..e8611c0 100644
--- a/core/MySigning.cpp
+++ b/core/MySigning.cpp
@@ -412,7 +412,7 @@ static void prepareSigningPresentation(MyMessage &msg, uint8_t destination)
 	msg.data[1] = 0;
 }
 
-// Helper to process presentation mesages
+// Helper to process presentation messages
 static bool signerInternalProcessPresentation(MyMessage &msg)
 {
 	const uint8_t sender = msg.sender;
@@ -526,7 +526,7 @@ static bool signerInternalProcessPresentation(MyMessage &msg)
 	return true; // No need to further process I_SIGNING_PRESENTATION
 }
 
-// Helper to process nonce request mesages
+// Helper to process nonce request messages
 static bool signerInternalProcessNonceRequest(MyMessage &msg)
 {
 #if defined(MY_SIGNING_FEATURE)
@@ -555,7 +555,7 @@ static bool signerInternalProcessNonceRequest(MyMessage &msg)
 	return true; // No need to further process I_NONCE_REQUEST
 }
 
-// Helper to process nonce response mesages
+// Helper to process nonce response messages
 static bool signerInternalProcessNonceResponse(MyMessage &msg)
 {
 #if defined(MY_SIGNING_FEATURE)
diff --git a/core/MySigning.h b/core/MySigning.h
index 5d703f9..cce6309 100644
--- a/core/MySigning.h
+++ b/core/MySigning.h
@@ -43,7 +43,7 @@
  * and not enabled by default.
  *
  * If you do want the additional security layer signing provides, you pick the backend of your
- * choise in your sketch. Currently, two compatible backends are supported; @ref MY_SIGNING_ATSHA204
+ * choice in your sketch. Currently, two compatible backends are supported; @ref MY_SIGNING_ATSHA204
  * (hardware backed) and @ref MY_SIGNING_SOFT (software backed). There also exist a simplified
  * variant (@ref MY_SIGNING_SIMPLE_PASSWD) of the software backend which only require one setting
  * to activate.
@@ -54,7 +54,7 @@
  * @note If you change the default pin (A3) make sure you use a pin that supports input/output
  *       (ex. A6 & A7 on a Pro Mini are input only pins).
  *
- * To use signng, you need to perform three major steps which are described below.
+ * To use signing, you need to perform three major steps which are described below.
  *
  * <b>Firstly</b>, you need to make sure to pick a backend to use.
  * @code{.cpp}
@@ -182,7 +182,7 @@
  * * If a node does require signing, any unsigned message sent to the node will be rejected.
  * This also applies to the gateway.
  * * Your radio communication quality is expected to work fine (if any NACK happen on a signing
- * related message, it will fail, and enabeling signing will put maximum strain on your RF link as
+ * related message, it will fail, and enabling signing will put maximum strain on your RF link as
  * maximum sized packets are transmitted in the network). See @ref MySigningTroubleshootinggrp.
  * * All nodes and gateways in a network maintain a table where the signing preferences of all nodes
  * are stored. This is also stored in EEPROM so if a node or gateway reboots, the other nodes does
@@ -309,7 +309,7 @@
  * You have a securely located gateway and a lock somewhere inside your "trusted environment" (e.g.
  * inside your house door, the door to your dungeon or similar).<br>
  * You need to make your node require signed messages but you do not necessarily need to make your
- * gateway require signed messsages (unless you are concerned that someone might spoof the lock
+ * gateway require signed messages (unless you are concerned that someone might spoof the lock
  * status of your lock).<br>
  * Configuration example for the secure lock node:<br>
  * @code{.cpp}
@@ -433,7 +433,7 @@
  * @section MySigninggrpbackground Background and concepts
  *
  * Suppose two participants, Alice and Bob, wants to exchange a message. Alice sends a message to
- * Bob. In MySensors “language” Alice could be a gateway and Bob an actuator (light swich,
+ * Bob. In MySensors “language” Alice could be a gateway and Bob an actuator (light switch,
  * electronic lock, etc). But to be generic, we will substitute the term “gateway” with Alice and a
  * “node” with Bob (although the reverse relationship is also supported).
  *
@@ -608,7 +608,7 @@ typedef struct {
  *
  * This function makes sure that the internal states of the signing infrastructure
  * is set to a known initial state.
- * \n@b Usage: This fuction should be called before any signing related operations take place.
+ * \n@b Usage: This function should be called before any signing related operations take place.
  */
 void signerInit(void);
 
@@ -617,10 +617,10 @@ void signerInit(void);
  *
  * This function makes sure any signing related presentation info is shared with the other part.
  * The presentation of the gateways signing preferences is done in @ref signerProcessInternal().
- * \n@b Usage: This function should be called by the presentation routine of the mysensors library.
+ * \n@b Usage: This function should be called by the presentation routine of the MySensors library.
  * You only need to call this directly from a sketch to set up a node to node signed message exchange.
  * If you do call this directly from a sketch, and you at some point change your sketch to go from
- * requireing signing to not requireing signatures, you need to present this change to the node at least
+ * requiring signing to not requiring signatures, you need to present this change to the node at least
  * once, so it can update its requirements tables accordingly. Or it will keep believing that this node
  * require signatures and attempt to send signed messages to it.
  *
@@ -632,7 +632,7 @@ void signerPresentation(MyMessage &msg, uint8_t destination);
 /**
  * @brief Manages internal signing message handshaking.
  *
- * This function takes care of signing related message handshaknig such as nonce exchange.
+ * This function takes care of signing related message handshaking such as nonce exchange.
  * \n@b Usage: This function should be called by the incoming message handler before any further message
  * processing is performed on internal messages. This function should only be called for @ref C_INTERNAL class
  * messages.
@@ -720,7 +720,7 @@ void signerSha256Init(void);
 void signerSha256Update(const uint8_t* data, size_t sz);
 
 /**
- * @brief Finalize an ongong hash calculation session and return the hash.
+ * @brief Finalize an ongoing hash calculation session and return the hash.
  *
  * The returned hash size is always 32 bytes. Buffer can be assumed to be valid
  * until @ref signerSha256Init() is called again.
@@ -816,7 +816,7 @@ int signerMemcmp(const void* a, const void* b, size_t sz);
  * |!| SGN | NCE | GEN											| Failed to generate nonce
  * | | SGN | NCE | NSUP (DROPPED)						| Ignored nonce/request for nonce (signing not supported)
  * | | SGN | NCE | FROM='node'							| Received nonce from 'node'
- * | | SGN | NCE | 'sender'!='dst' (DROPPED)| Ignoring nonce as it did not come from the desgination of the message to sign
+ * | | SGN | NCE | 'sender'!='dst' (DROPPED)| Ignoring nonce as it did not come from the designation of the message to sign
  * |!| SGN | BND | INIT FAIL								| Failed to initialize signing backend
  * |!| SGN | BND | PWD<8										| Signing password too short
  * |!| SGN | BND | PER											| Backend not personalized
@@ -851,9 +851,9 @@ int signerMemcmp(const void* a, const void* b, size_t sz);
  *
  * @subsection MySigningTroubleshootingSymptomStFail Signing fails and logs show st=fail on transmissions
  *
- * This is actually not a signing problem, although ofthen st=fail becomes st=ok when signing is disabled.
+ * This is actually not a signing problem, although often st=fail becomes st=ok when signing is disabled.
  * This is by far the most commonly reported problem with signing, but the problems is not with signing,
- * it is with radio performence.<br>
+ * it is with radio performance.<br>
  * This is a typical log which might look like a signing related issue but isn't:
  * @code{.unparsed}
  * 0;255;3;0;9;Skipping security for command 3 type 16
@@ -870,7 +870,7 @@ int signerMemcmp(const void* a, const void* b, size_t sz);
  * The reason for this is that when signing is used, the messages transmitted become relatively large.<br>
  * Because of this, the message is more sensitive to noise, and the chance for a message to get scrambled
  * increase with the message size. Please refer to the troubleshooting section at the MySensors forum for
- * information on how to improve radio performence.<br>
+ * information on how to improve radio performance.<br>
  * This is a good place to start: https://forum.mysensors.org/topic/666/debug-faq-and-how-ask-for-help
  *
  * @subsection MySigningTroubleshootingSymptomNonce Failed to generate nonce
diff --git a/core/MySigningAtsha204.cpp b/core/MySigningAtsha204.cpp
index 52eaf66..d6ab75e 100644
--- a/core/MySigningAtsha204.cpp
+++ b/core/MySigningAtsha204.cpp
@@ -271,7 +271,7 @@ bool signerAtsha204VerifyMsg(MyMessage &msg)
 		// Overwrite the first byte in the signature with the signing identifier
 		_signing_hmac[0] = SIGNING_IDENTIFIER;
 
-		// Compare the caluclated signature with the provided signature
+		// Compare the calculated signature with the provided signature
 		if (signerMemcmp(&msg.data[mGetLength(msg)], _signing_hmac,
 		                 min(MAX_PAYLOAD-mGetLength(msg), 32))) {
 			return false;
diff --git a/core/MySigningAtsha204Soft.cpp b/core/MySigningAtsha204Soft.cpp
index 05e2ca6..19c5f65 100644
--- a/core/MySigningAtsha204Soft.cpp
+++ b/core/MySigningAtsha204Soft.cpp
@@ -276,7 +276,7 @@ bool signerAtsha204SoftVerifyMsg(MyMessage &msg)
 		// Overwrite the first byte in the signature with the signing identifier
 		_signing_hmac[0] = SIGNING_IDENTIFIER;
 
-		// Compare the caluclated signature with the provided signature
+		// Compare the calculated signature with the provided signature
 		if (signerMemcmp(&msg.data[mGetLength(msg)], _signing_hmac,
 		                 MIN(MAX_PAYLOAD-mGetLength(msg), 32))) {
 			return false;
diff --git a/core/MyTransport.cpp b/core/MyTransport.cpp
index 4969375..5059510 100644
--- a/core/MyTransport.cpp
+++ b/core/MyTransport.cpp
@@ -415,7 +415,7 @@ void transportInitialise(void)
 {
 	_transportSM.failureCounter = 0u;	// reset failure counter
 	transportLoadRoutingTable();		// load routing table to RAM (if feature enabled)
-	// intial state
+	// initial state
 	_transportSM.currentState = NULL;
 	transportSwitchSM(stInit);
 }
diff --git a/core/MyTransport.h b/core/MyTransport.h
index 293ace7..8d910ce 100644
--- a/core/MyTransport.h
+++ b/core/MyTransport.h
@@ -130,7 +130,7 @@
 *
 * Incoming / outgoing messages:
 *
-* See <a href="https://www.mysensors.org/download/serial_api_20">here</a> for more detail on the format and definitons.
+* See <a href="https://www.mysensors.org/download/serial_api_20">here</a> for more detail on the format and definitions.
 *
 * Receiving a message
 * - TSF:MSG:READ,sender-last-destination,s=%%d,c=%%d,t=%%d,pt=%%d,l=%%d,sg=%%d:%%s
@@ -192,9 +192,9 @@
 #define AUTO						(255u)			//!< ID 255 is reserved
 #define BROADCAST_ADDRESS			(255u)			//!< broadcasts are addressed to ID 255
 #define DISTANCE_INVALID			(255u)			//!< invalid distance when searching for parent
-#define MAX_HOPS					(254u)			//!< maximal mumber of hops for ping/pong
+#define MAX_HOPS					(254u)			//!< maximal number of hops for ping/pong
 #define INVALID_HOPS				(255u)			//!< invalid hops
-#define MAX_SUBSEQ_MSGS				(5u)			//!< Maximum number of subsequentially processed messages in FIFO (to prevent transport deadlock if HW issue)
+#define MAX_SUBSEQ_MSGS				(5u)			//!< Maximum number of subsequently processed messages in FIFO (to prevent transport deadlock if HW issue)
 #define UPLINK_QUALITY_WEIGHT		(0.05f)			//!< UPLINK_QUALITY_WEIGHT
 
 
diff --git a/hal/architecture/NRF5/MyHwNRF5.cpp b/hal/architecture/NRF5/MyHwNRF5.cpp
index b67d24c..b1b7dc7 100644
--- a/hal/architecture/NRF5/MyHwNRF5.cpp
+++ b/hal/architecture/NRF5/MyHwNRF5.cpp
@@ -92,7 +92,7 @@ bool hwInit()
 	NRF_UART0->POWER = 0;
 #endif
 #else
-	// Confiure UART
+	// Configure UART
 	MY_SERIALDEVICE.begin(MY_BAUD_RATE);
 #if defined(MY_GATEWAY_SERIAL)
 	while (!MY_SERIALDEVICE) {
@@ -230,7 +230,7 @@ void hwSleepPrepare(uint32_t ms)
 		if (ms<512000) {
 			// prescaler 0, 30.517 μs resolution -> max 512 s sleep
 			MY_HW_RTC->PRESCALER =  0;
-			// Set compare register to 1/30.517 µs to garantee event triggering
+			// Set compare register to 1/30.517 µs to guarantee event triggering
 			// A minimum of 2 ticks must be guaranteed
 			// (1000/32768)<<12 == 125
 			MY_HW_RTC->CC[0] = max(((ms << 12) / 125), 2);
@@ -355,7 +355,7 @@ int8_t hwSleep(uint8_t interrupt1, uint8_t mode1, uint8_t interrupt2,
 			attachInterrupt(interrupt2, wakeUp2, mode2);
 		}
 
-		// Reset attrubute
+		// Reset attribute
 		_wokeUpByInterrupt = INVALID_INTERRUPT_NUM;
 	}
 
@@ -421,7 +421,7 @@ uint16_t hwCPUVoltage()
 	// Sampling is done with lowest resolution to minimize the time
 	// 20uS@260uA
 
-	// Concurrent ressource: disable
+	// Concurrent resource: disable
 	uint32_t lpcomp_enabled = NRF_LPCOMP->ENABLE;
 	NRF_LPCOMP->ENABLE = 0;
 
diff --git a/hal/transport/MyTransportHAL.h b/hal/transport/MyTransportHAL.h
index f613f3c..a651b16 100644
--- a/hal/transport/MyTransportHAL.h
+++ b/hal/transport/MyTransportHAL.h
@@ -92,7 +92,7 @@ bool transportAvailable(void);
 bool transportSanityCheck(void);
 /**
 * @brief Receive message from FIFO
-* @return length of recevied message (header + payload)
+* @return length of received message (header + payload)
 */
 uint8_t transportReceive(void* data);
 /**
diff --git a/hal/transport/MyTransportRS485.cpp b/hal/transport/MyTransportRS485.cpp
index c32695d..1f4a125 100644
--- a/hal/transport/MyTransportRS485.cpp
+++ b/hal/transport/MyTransportRS485.cpp
@@ -416,7 +416,7 @@ int16_t transportGetTxPowerLevel(void)
 
 bool transportSetTxPowerPercent(const uint8_t powerPercent)
 {
-	// not possbile
+	// not possible
 	(void)powerPercent;
 	return false;
 }